1、SILICONE MATERIAL: This hot water bottle bag is made of food grade silicone that is durable and BPA free. 2、HEATING IN MICROWAVE OVEN: This silicone hot water bag can be heated in a microwave oven with full cold water. 3、COLD COMPRESS: Can be used for cold compress, just pour 3/4 of cold water into the refrigerator and refrigerate for more than 30 minutes. 4、EXPLOSIONPROOF AND LEAKPROOF: One piece forming process, good sealing, explosionproof and leakproof with fashionable shape. 5、NECESSITIES OF LIFE: The explosion proof hot water bottle is easy to carry, can be used in the office, at home, or on business. 1 x Hot Water Bottle 1 x Knit Cover    Item Type: Hot Water BottleMaterial: Silicone + KnitHot Water Bottle Size: Approx. 12.6x7cm / 5x 2.7inKnit Cover Size: Approx. 16.5x9cm / 6.5x 3.5inWeight: Approx. 145g / 5.1ozCapacity: Approx. 245ml  Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.